single embryo transfer

medicine

Also known as: SET

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Last updated

July 19, 2026

Quick Summary

Single embryo transfer (SET) is a medical procedure that is part of the in vitro fertilization (IVF) process. It involves transferring a single embryo into the uterus, typically via a catheter inserted through the cervix. This technique is used in human fertility treatments and also in animal breeding to transfer an embryo from one female to another.1

While SET can reduce the risks associated with multiple pregnancies, it has a lower success rate per cycle compared to transferring multiple embryos. This often means that at least two cycles of SET may be necessary for success, which can be a financial and emotional burden for patients. Advances in IVF, such as improved cryopreservation and embryo selection, have helped reduce risks associated with multiple pregnancies, but economic disparities can still influence decisions regarding embryo transfer.23

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in vitro fertilization
Ethical issues
The technique of single embryo transfer (SET) is available, though less than 10 percent of women opt for SET because it has a lower rate of success relative to multiple embryo transfer—in many cases at least two cycles of SET are necessary for success. Furthermore, many women are…
Read More
The technique of single embryo transfer (SET) is available, though less than 10 percent of women opt for SET because it has a lower rate of success relative to multiple embryo transfer—in many cases at least two cycles of SET are necessary for success. Furthermore, many women are…
Read More